Metal double hung window



I June 14, 1938,.

K. F. .I oRss METAL DOUBLE HUNG WINDOW` Filed Deo. e, 1955 2sheets-snaai. 1-

June 14, 1938A.

K. s=. JoRss METAL DOUBLE HUNG WINDOW- 2 sheets-sheet 2 Filed Dec. 6.1935 m25# w s Patented June 14, 193s UNITED STATES lPATENT OFFICEfollowing description.

One of the objects of the invention is the prof#v vision of an'improvedmetal frame for a double hung window.

' Another object of the invention is the provision of a new and improvedmanner of concealing and attaching the counterbalancing devices for thesliding window sashes.

Another and further object of the invention is the provision vof animproved weather stripping for Ithe window.

A still further object ofthe invention is' the provision of animproved-mechanical joint at the corners 'of the sash frames.

' Another and` still further object is the provision of an improvedmechanical'connection between the sash frame muntins and the membersmaking up the'sash frame itself.

Other further objects, details of mechanical improvement'and improvedresults of a window built in accordance with the present invention willappear in more detail from the following description when read in thelight of the accom- -panying drawings.

All of the objects and novel features of iniproved constructioncomprising the invention are for thepurpose of providing an improvedmetal double hung window which is weather-tight, easy working, pleasingVof appearance and one thatA is of low cost as to' manufacture and cheapas to maintenance cost yet highly emcient in operation. v

In the drawings:

Fig. 1 is a horizontal sectional view through a window built inaccordance with the present in- 45' vention. v Y

Fig. 2 is a vertical sectional view taken on the line 2--2 of Fig. 1looking in the direction indicated by arrow.

Fig. 3 is a detailed perspective view partly in proved window.

Fig. 4 is a fragmentary View in vertical section through one of theframe members of the sash.

Fig. 5 is a sectional View taken onthe line 5 5 horizontal section, of alower corner of the im of Fig. 4 illustrating the manner of attachmentof a sash muntin to the sash frame member.

Fig. 6 is a fragmentary view partly in vertical section illustrating themanner of locking the sash corner joining members in place.- Fig. 7 is adetailed perspective view of a rubbing strip.

Having reference now to the drawings, it will Abe-seen` that the frameis made up of a head member A, a sill B joined by uprights or jambsvCand D. This frame is preferably composed of steelV and is shaped so thatthe upright or jamb members provide channelways l and if in which slidethe inner and lower sash E, and with channelways 2 and 2a in which,slide the upper and outer sash F.

The frame sill is shaped to provide a sill lamb 3 and in spaced parallelrelationship thereto a weathering find. The frame head is shaped in amanner to provide similarly a head jamb d and a weathering iin e. Ateach of the corners oi vthe frame there is provided an l.shaped framesecurportion il and behind the inner vertically disposed edge l2, seeFig. 3, of the frame sill. It

is of course understood that these angle clips or securing members arewelded, or otherwise suit are the means for rigidly securing togetherthe vertical and horizontal members making up the window frame. y

' The window sashes are of metallic construction and preferablyaluminum. By reference to the several figures of the drawings it will beseen that the sash uprights it' and it and that the sash frame sillmember it and head member i@ are provided on their inner iaces with ashallow channelway il adapted to receive the sash glass and the puttywhich secures said glass in place while their opposite and outer facesor edges are provided with a channelway it. Between the two channelwaysof the sash frame memlrs the members are hollow with the result thatthere is provided in each member a passageway or conduit i9. Thispassageway or conduit is utilized in the mechanical joint which Iprovide for securing the sash frame members 'together at the corners ofthe frame.

The particular construction of the members making up the sash frames isutilized to reduce the amount of metal used in the sash and thereby notonly keep down the-expense of the sash but also to provide a sash whichis light. The rigidity and strength of the sashframe members is assuredby the inclusion of the integrally formed web 20 which constitutes oneof the defining walls of the conduit I9.

As mentioned, I utilize this particular and peculiar construction inproviding a novel and highly efcient corner joint for the sash framemembers. To effect the joint I provide a. metallic angle iron H, seeFig. 6, one leg 2I of which is driven into the conduit I9 of the lowerhorizontal sash frame member I5 while theother rleg 22 of the iron isdriven into the conduit I9 of the vertical sash frame member I3. I saythat the legs are driven in'because they are of a dimension to provide adriving fit with the conduits. However, to assure against anydisplacement of the angle irons and to assure that once the miteredcorners of the frame members are properly positioned they will bemaintained in proper position to one another after said originalfitting, I pin-prick as at 23 the upper and lower walls of the conduitto lock the sash frame members securely in proper position. e

By the provision of the above described corner joint for the sash framea simple and cheap yet highly eiilcient joint is provided. By securingthe sash frame at t. corners in the manner described the cost or weldingthe frame at its corners or the cost incident to some otherwell knownmanner oi' securing the frame members together is eliminated. I havefound that my manner of securing the frame and its corners eifects amaterial reduction in the cost of manufacture yet at the same timeprovides a securing means which is highly eiiicient and effective inactual use.

To the end of further avoiding the necessity of any form ofwelding Ifurther utilize the peculiar construction of the frame members of thesash in securing the several muntins in position within the sash frame.Figures 4 and 5 of the drawings illustrate the method and constructionutilized by me in this connection. Atthose points where l a muntin is tobe connected to a sash frame member oppositely disposed holes 2l and 2lare provided through the' walls 20 and 2l which constitute the bottomand top respectively of the conduit Il in the frame member. 'I'he muntinJ is provided at its end with a tenon v2l which is inserted through theopening 2l and by the insertion of a proper tool through the opening 2lthis tenon is bent 4or riveted down as at 28, all of which is clearlyillustrated in Fig. 5 of the drawings.

The weather shipping for the window -and particularly the lamb weatherstripping is of a novel and decidedly improved construction. The

weather stripping for the lambs of the window which parallels theadjacent wall of the sash" channelways.y Beyond the portitn .l the stripis termediate its length so that the upper and lower sections of weatherstripping can be positioned i`n the frame independently of one another.'

As is clearly evident from Fig. 2 of the drawings the coiled ends 34 ofthe weather strip are Y positioned within the channels I8 provided inthe edges of the vertical sash frame members, and due to the resilientnature of the strip these coils will contact the side walls which deiinethe channelway in the sash frame members. It will be understood that asthe window sashes are raised and lowered they will travel along thecoiled portions of the weather strip but the resilient engagement of thestrips with the sash is not sufiiciently great to in any manner impedesuch intendedmovement of the sash.

It is to be noted that the width of the window frame channelways whichreceive the window sash is greater than the thickness of the sash. whichassures that the sash will slide easily, and further assures that ifthere is any settling of the building or distortion of the window framedueto that reason or any other reason there will still be no tendencyfor the sash to bind in the frame and thus render diiiicult any raisingor lowering of the window sash.

It is to be noted that the ends of vthe weatherl stripping are coiled inopposite directions. ThisI is for a specific purpose. In Fig. 2 thewindow sash nearer the top of the drawing is the inside sash while theother is the outside sash. Any wind pressure brought to bear against theouter surfaces of the window sashes has to pass the double lcontact ofthe weather strip with the walls defining the channel in the sash frame.I f any wind or air Apasses both of these contacts it is then within thecoil of the weather strip and it has been found that the air pressure islargely and almost entirely dissipated within the weather strip itselfdue to the fact that the coil o! the strip imparts a circular motion toany air which may pass the strip. This dissipation of the air Y pressurewithin the strip has been found in actual 'practice to reduce to theminimum the chance of any outside air escaping past thewindow into theinterior of the room.

The design of the weather stripping itself is lsuch that it will yieldand permit a lateral movement of the sashes which in turn will tend toovercome any possible irregularity in the manufacture of the window aswell as to take care of any settlement .of the masonry in thebuildingwhich might tend to force or twist the window frame out of itsproper or true position.

By reference to Figs. 2 and 3 ot the drawings it will be seen thatweather stripping of the head and sill members of the upper and lowersashes is also taken care of. In the channelways of the head and sillmembers of the sashes there is placed a channelled non-metallic weatherstripping material Il which receives the sill and head stripping tins land l. The depth of the fins and the depth of the channelled strippingmaterial 3l is such as to assure constant weathering even though thesashes are not moved to their fully closed positions and locked. Inother vorm, the

'i the lower sash rail l5 at its inner side is pro- `weathering is alsoassured even though the masonry of the building may settle and tend todistort to some extent the window frame out of its proper and trueposition.

Weathering between the head of the lower sash and the lower end of theupper sash is provided by providing the upper sash at its lower end withan oisetchannelway or bracket 36 within which is positioned a strip ofvfelt 31 or the like and providing the head of the lower sash memberwith-a channel member 38 of the same configuration and which has vitslower end 39 positioned to engage the felt strip under pressure when thesashes are in their closed positions.

To provide means for operating the lower sash vided with an integrallyformed inwardly and downwardly curved portion 40 which preferablyextends throughout the greater portion of the length of the member andserves as a sash operating handle.

It is always difficult to prevent iniiltration of air between theopposing faces of the vertical members of thevupper and lower sashes.Constructions in the past, so far as I am aware, have failed toadequately weather the window at this point. In my improved windowconstructionlt will be apparent that the upper and lower sashes areconsiderably separated although they lie in parallel planes. To provideagainst the -infiltration of air at the point above referred to, I haveprovided an improved rubbing strip designated asl a bulged portion 43,which bulged portion provides a pocket for the reception of a block M offelt or other suitable non-metallic material. This block is of greaterwidth. than the width of the metallic strip and consequently the feltitself constitute's the weathering connection with the stiles oruprights of the upper and lower sashes, as is clearly apparent in Fig. 2of the drawings. In this iigure of the drawings it will be seen that therubbing strip M with the felt positioned in the pocket is secured to thejamb by means of suit.- able screws $5 or the like which pass throughthe elongated openings 46 in the strip end into the jamb portion 3iintermediate the jamb sash channels. In addition to securing the rubbingstrip in place these screws serve also to act as a 'means for securingthe weather stripping K to .the

P. One-of these devices is of courseprovided ineach of the window framechannelways so that there will be a counterbalancing device for eachsash at each ofv its sides. 'I'he channelways in the window frame are-unusually deep which permits these counterbalancing Adevices to be poand completely concealed from view and protected from possible, damage.Connection between each individual sash balancing device and theparticular sash `with which it functions is provided through clips Q,one end d1 of which is suitably secured to the sash adjacent its loweredge while the other end of thev clip is in' the form of an arm, oneportion 48 of which parallels the sash f rame while the other portion-69 is bent to extend into the window frame channelway at a point behindboth the sash and the weather stripping. This end 49 is provided with aslot 5U which receives the end 5I of the sash balancing device. Toadequately lock the connection between the arm and the sash balancingdevice the extreme end of the arm 48 is crimped downwardly upon the end5i of the sash balancing device, as appears at 52 in Fig. 3 of thedrawings.

To p ermit of the construction above dened the Window frame jambchannelways are of greater width than the thickness of the window sash.Thus the clip arm 4Q can be positioned between' the vsash and the 'sidewall of a window frame channel without causing any binding upon thereciprocatory movement of the sash within the jamb channel.

'I'he particular design and construction of the window frame, theweather stripping and the manner of interconnecting the counterbalancingdevices with the sash frame permits easy and quick installation of theweather stripping and easy and quick installation of the sashesthemselves as well as to provide easyaccessibility for the removal orinstallation of the once'aled counterbalancing devices. l

It should be of course obvious that the manner of fabricating the windowframe and of fabricating the' sash is such' that the manufacturing costof these members is appreciably reduced as compared to the cost offabrication of frame and sash as now commonly manufactured.

The weathering of the window is particularly leffective and theconvolute weatherstripping has been found to be unusually effective asac tual tests have indicated that due to the' rotative movement impartedby the strip to any air which enters it, the strip tends to sothoroughly dissipate the air pressure that good weathering of the windowcan be obtained even if actual contact is not maintained between theweather strip and the walls of the sashy channels. f

Many other numerous and specific improved constructional features of theinvention not Vonly from the standpoint of manufacture but from thestandpoint of installation of the window and its effective operation,will be apparent to anyone skilled in the building art.

I claim:

1. A window including a channeled window frame and a sash reciprocaltherein, a sash baloutwardly from :the frame channel and havingconnection with the face of said sash adjacent V ancing devicepositioned beyond each end of the window sash' and in the frame channel,and

means extending from the sash balancing device its lower end and at apoint exterior of the frame Y channel.

2. A window including a window @frame and a sash, said frame includingjambs having channels for '.reciprocally receiving said sash, a weatherstripping in said channels and having weathering engagement with saidsash. a sash balancing device positioned back of the weather strippingin each of said channels. and a member extending from each balancingdevice 'outwardly '75 from the channel past the weather stripping andthat portion of the sash within the channel and having attachment withthe sash face at a point exterior of the frame channel.

3. In a double hung window, a window frame having jambs provided withchannelways to revertical edges of said sashes extending into saidvchannelways and themselves provided with channelways, weather strippingsecured to said frame jambs at a point intermediate the jamb channelwaysand extending into the channelways and having weathering connection withthe adjacent sides of said channelways, the ends of said weatherstripping formed in a convolute, and the convolute ends of saidstripping positioned within and having weathering contact with bothwalls of the sash channels.

4. A construction such as deiined in claim 3, wherein the convolute atone end of the weather strip is coiled towards the inner side of thewindow and the convolute at the other end of the weather strip is coiledtowards the outer side of the window.

5. A construction 'such as defined in claim 3 wherein counterbalancingdevices for the window sash are positioned in the jamb channelways backof said weather stripping and have operative connection with said windowsashes at a point exterior of the :lamb channelways.

6. A construction such as deined in claim 3, wherein weathering isprovided between the sash and the head and sill members' of the window`frame and between the head and bottom frame members of the lower andupper sash respectively.

7. A .window including a window frame and a sash, said frame includingvertical lamb members having deep channelways vfor reciprocablyreceiving the vertical edges of said sash, the v ertical end walls ofsaid sash being provided with channelways the walls of which extend intoand are loosely movable within the said jamb channels'and have theiredges terminating short of the backs of saidamb channels, a weatherstripping in said jamb channels and provided with portions which extendinto and have weathering engagement with the sash channelways, sashbalancing devices in each of said frame channels and positionedintermediate the weather strlpping and the backs of said channelways andconnection means extending from said sash balancing devices outwardlyfrom the frame channels and having connection with the face of the sashat a point exterior of the trame channelways, for the purpose described.v

8. In a window, a window frame having vertical jambs provided withchannelways adapted to reciprocably receive a window sash, the verticalend walls of said sash provided with chan'- .nelways the walls of whichextend into and are loosely movable within the channelways of the frame,a weather strip secured to said frame jambs at one side of. itschannelways and having a portion formed in a convolute which extendsinto and has a two-point weather engagement with the side walls of thechannelway of the sash, and means to reciprocate said sash on theconvolute portion of said weather strip when the sash is being openedand closed.

9. In a double hung window, a window frame having vertical jambs, eachjamb provided with a pair of vertically disposed channelways adapted toreciprocably receive upper and lower sashes arranged in separatedparallel relationship, weather stripping secured to each of said framejambs and having a portion which parallels one wall of each of the framechannelways and has an inwardly and forwardly extending portion whichterminates in a convolute which extends throughout the length of thechannelway, the vertical edges of said sash provided with channelwaysadaptedA to receive and have a two-point weathering engagement with theconvolutes of said weather strips, and means to slide saidsash on theconvolute portions of said weather strips to open and close said window.

10. In a window a window frame having vertical jambs provided withchannelways adapted to reciprocably receive a window sash and a partingstrip intermediate said channelways, the vertical edges of said sashprovided with channelways the walls of which extend into and are looselymovable within the channelways of the frame, a weather -strip for eachof said frame jambs, said strips having a central portion of a U-shapein cross section and adapted to receive the parting strip and be securedthereto, the legs of said U-portions of the strips paralleling theadjacent side walls of the jamb channelways, said strips beyond theirU-shaped portions being bent to extend around the vertical edges of oneof the walls defining the sash channelways and terminating in convoluteportions which are positioned within the channelways of the sash andhave spring engagement with both walls of said sashchannelwaysthroughout the length of said walls, for the purpose described.

11. A structure as defined in claim 8, wherein counterbalancing devicesfor the window sash are positioned in the jamb channelways in the spacebetween the backs of said weather stripping and the backs of saidchannelways and have with one wall of said frame lamb channelways.

and its other end extending around the edge of one wall of said sashchannelway and terminating in a convolute, anclY the convolute end oi'said weather stripping being disposed within the channelwayso'f the sashand having weathering engagement with both of the side walls thereof.

KARL F. JORSS.

